CVE-2022-20830 : What You Need to Know

A vulnerability in authentication mechanism of Cisco Software-Defined Application Visibility and Control (SD-AVC) on Cisco vManage could allow an unauthenticated, remote attacker to access the GUI of Cisco SD-AVC without authentication. This could result in unauthorized access to sensitive information.

Understanding CVE-2022-20830

This CVE involves an authentication bypass vulnerability in Cisco SD-WAN vManage, potentially allowing remote attackers to view managed device names, SD-AVC logs, and SD-AVC DNS server IP addresses without proper authentication.

What is CVE-2022-20830?

CVE-2022-20830 is a security vulnerability found in Cisco SD-WAN vManage, specifically in the Software-Defined Application Visibility and Control (SD-AVC) component. It enables unauthenticated attackers to access the GUI of Cisco SD-AVC, leading to unauthorized viewing of critical system information.

The Impact of CVE-2022-20830

The impact of this vulnerability is significant as it allows remote threat actors to exploit the authentication flaw and gain access to sensitive data within Cisco SD-WAN vManage. This could compromise the confidentiality of managed device details, logs, and DNS server IP addresses, posing a serious security risk.

Technical Details of CVE-2022-20830

This section covers specifics regarding the vulnerability, affected systems, and the exploitation mechanism.

Vulnerability Description

The vulnerability lies in the authentication mechanism of Cisco SD-AVC on Cisco vManage, exposing the GUI to unauthenticated remote attackers. By leveraging this flaw, attackers can bypass authentication and access sensitive information within the SD-AVC interface.

Affected Systems and Versions

Vendor: Cisco
Product: Cisco SD-WAN vManage
Versions: All versions are affected

Exploitation Mechanism

Attackers can exploit this vulnerability by directly accessing the exposed GUI of Cisco SD-AVC. By circumventing the authentication process, unauthorized individuals can view managed device names, SD-AVC logs, and SD-AVC DNS server IP addresses.

Mitigation and Prevention

To address CVE-2022-20830, immediate steps should be taken, followed by long-term security practices and regular patching.

Immediate Steps to Take

Cisco advises users to apply the necessary updates and patches to mitigate this vulnerability immediately.

Long-Term Security Practices

Implement strict access controls and segmentation to limit unauthorized access to critical systems.
Regularly monitor and audit GUI access to detect any suspicious activities.

Patching and Updates

Ensure that the latest security updates and patches provided by Cisco are promptly installed to eliminate the authentication bypass vulnerability.